int ImageSpecClass::LeadTimeForChipSize() const
{
int totalMem = totalMemOnTorrentServer();
if ( totalMem > ( 24*1024*1024 ) )
{
if ( ( rows * cols ) > 10000000 )
return ( 8 ); // 318
if ( ( rows * cols ) > 2000000 )
return ( 10 ); // 316
else
return ( 21 );
}
else
{
if ( ( rows * cols ) > 10000000 )
return ( 2 ); // 318
if ( ( rows * cols ) > 2000000 )
return ( 4 ); // 316
else
return ( 21 );
}
}
void ImageTracker::DecideOnRawDatsToBufferForThisFlowBlock()
{
// need dynamic read ahead every 20 block of flows for 318 chips
if (ChipIdDecoder::GetGlobalChipId() == ChipId318) {
static int readahead = master_img_loader.lead;
const double allowedFreeRatio = 0.2;
double freeSystemMemory = GetAbsoluteFreeSystemMemoryInKB() / (1024.0*1024.0);
double totalSystemMemory = (double)(totalMemOnTorrentServer()) / (1024.0*1024.0);
double freeRatio = freeSystemMemory / totalSystemMemory;
if (freeRatio < allowedFreeRatio)
master_img_loader.lead = 1;
else if (freeRatio < 0.3)
master_img_loader.lead = 2;
else if (freeRatio < 0.6)
master_img_loader.lead = 4;
else
master_img_loader.lead = readahead;
printf("TotalMem: %f FreeMem: %f Free/total Ratio: %f Allowed Free/total Ratio: %f readahead: %d\n",
totalSystemMemory, freeSystemMemory, freeRatio, allowedFreeRatio, master_img_loader.lead);
fflush(stdout);
}
}
